Postpublished at 07:05 British Summer Time 6 October 2017
We have a time! Two in fact.
First, Sergio Perez tip toes round in 1:51.345 before Esteban Ocon goes almost two seconds quicker, posting a 1:49.518.
Summary
Heavy rain hampers teams' running in second practice
Vettel fastest in first practice, two tenths quicker than Hamilton
Toro Rosso's Carlos Sainz crashes in FP1
Hamilton leads Vettel by 34 points in title race
Get involved #bbcf1
Postpublished at 07:05 British Summer Time 6 October 2017
Postpublished at 07:03 British Summer Time 6 October 2017
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End of twitter postPostpublished at 07:03 British Summer Time 6 October 2017
Sebastian Vettel is the next out on the track.
It is expected to be drier for the rest of the weekend but the weather can be as unpredictable as Manchester so never say never.
Postpublished at 07:00 British Summer Time 6 October 2017
Jolyon Palmer and Marcus Ericsson also head out for a check on the conditions.
No-one is doing anything more than an exploratory lap.
Postpublished at 06:57 British Summer Time 6 October 2017
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End of twitter postPostpublished at 06:53 British Summer Time 6 October 2017
Plenty of spray kicking up behind the Ferrari, but it's not too bad.
Nico Hulkenberg likes what he says and decides to join Kimi Raikkonen on the track.
Postpublished at 06:52 British Summer Time 6 October 2017
Finally, the silence is broken. Kimi Raikkonen heads out to test the conditions.
Full wets o'clock.
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End of twitter postPostpublished at 06:48 British Summer Time 6 October 2017
Tom Clarkson has just caught a word with Daniel Ricciardo on BBC Radio 5 live. The Red Bull driver explains why he is in no rush to head out in this session.
He said: "The problem is we get one free set of inters on Friday but we don't get a free set of extremes, so any we use today will cost us. We can use the inters and we will but if it is extreme conditions we will not run.
"We are confident we will get on inters and have a look."
Go! Go! Go!published at 06:45 British Summer Time 6 October 2017
The rain has stopped and drivers are strapping on their race helmets.
The light goes green at the end of the pit lane, but no-one is in a massive rush to head out.
Get involved #bbcf1published at 06:44 British Summer Time 6 October 2017
Gill Russell: Am I the only one hoping it keeps raining to keep the glorious emergency filler commentary going on text updates/audio stream?
I'd discussed ducks, paper boats and car hats. I had nowhere else to go!
Get involved #bbcf1published at 06:42 British Summer Time 6 October 2017
Seeing an inflatable banana on a makeshift raft is one of the more bizarre moments I've seen in Formula 1 this season.
What is your most bizarre moment of the season? Let us know via #bbcf1
Postpublished at 06:41 British Summer Time 6 October 2017
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End of twitter postSession will start at 06:45 BSTpublished at 06:39 British Summer Time 6 October 2017
Good news. Race control confirms that cars will be cleared to go onto the circuit at 06:45 BST.
That means we'll get 45 minutes of practice.
Postpublished at 06:38 British Summer Time 6 October 2017
Mechanics busy working away in the Ferrari garage. Meanwhile, at Force India...
(We're sure they are busy doing car things as well!)
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End of twitter postPostpublished at 06:35 British Summer Time 6 October 2017
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End of twitter postRain to easepublished at 06:34 British Summer Time 6 October 2017
Andrew Benson
BBC Sport’s chief F1 writerOfficial weather forecast is for drier spells with light intermittent rain/a few drops in the next 30mins.
Postpublished at 06:33 British Summer Time 6 October 2017
A fleeting moment of aquaplaning for Bernd Maylander in the safety car. That doesn't bode well for any action any time soon.
Postpublished at 06:31 British Summer Time 6 October 2017
Stoffel Vandoorne has changed into his casual clothes so it doesn't look like he is expecting to go out any time soon.
The rain has just eased off, though, as the safety car heads out onto the track again.
Postpublished at 06:28 British Summer Time 6 October 2017
Yep. It's raining.
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End of twitter postGet involved #bbcf1published at 06:26 British Summer Time 6 October 2017
Wet weather bingo
We're asking what you think we will see during the rain delay.
Mark Scott: A famous branded ice cream on a stick covered in chocolate.